Sheet-delivering mechanism for printing-presses.



' F. II` BEIIOLD,

SHEET DELIVERING NIECI-IANISIVI FOB PRINTING IRESSES.

.APPLICATION FILED OCTE 30| I9I6.

1,9%345 m29 Y Patented July 24, 1917.

F. H. BEROLD. SHEET DELIVERING IVIECHANISM EUR PRINTING PRESSES.v

Patented July 24, 1917 `s sHEETssHEET 2 am L APPLICATION FILED OCT. 30, 1916.

EESCCSQ... @..CCCCCCC SCCC fvcnuccufynundCF-rmdu F. H. BEROLD. SHEET DELIVER-ING MECHANISM FOR PRINTINGv PRESSES.

APPLICATION FILED OCT. 30. 1916.

Patented July 24, 1917.

3 SHEETS-SHEET 3.

J 'nmsesi W M WM UW sheets in their delivering and dropping FREDERICK H. BEROLD, OF WYOMING, OHIO.

SHEET-DELIVERING MECHANISM FOR PRINTING-PRESSES.

Application filed October 30, 1916.

To all whom it 'may concern:

5 State of Ohio, have invented certain new and useful Improvements in Sheet-Delivering Mechanism for Printing-Presses, of which the following is a specification.

My inventionvrelates to sheet delivering mechanism for controlling the action of the movements, and has for its object the provision of novel means whereby the printed sheets are caused to drop in regular manner.

Stops are provided in delivering mechanisms to limit the travel of the sheet. Upon contact of the sheet with said stops the sheet is still subject to its inertia of movement imparted during the travel of the sheet in its delivering movement. The difiiculty in the dropping of sheets heretofore has been that this inertia of movement` caused a crowding of the rear portion upon the front portion of the sheet, resulting in a buckling or cross-folding of the sheet, which resulted in the dropping of the sheet in such buckled or folded -condition and prevented the flatwise laying of the sheet upon the pile.

It is the object of my invention to avoid these objections, and to stiffen the sheet in the direction of its path of travel so as to resist the folding or buckling action caused by the stoppage of the forward edge of the sheet while the sheet is subject to its inertia of movement, to cause the sheets to Vstack flat on the delivery stack, and to prevent damage to the front edge of the sheet by contact with the stop. Y

My invention consists in providing novel means whereby the printed sheet during its passage to dropping position has a downward bulge imparted to it, the curvature of which extends crosswise of the path of travel of the sheet in its delivery movement, the hollow of the bulge extending lengthwise of said path of travel, so as to stiffen the sheet in the direction of its path of travel.

`lt is the object of my invention further to provide novel means whereby, in: the dropping of the sheet, its middle portion extending lengthwise of its path of travel., is caused to descend first so as to be the first portion which makes impact with the Specification of Letters Patent.

Patented July 241, 19t?.

Serial No. 128,505.

portions of the sheet then dropping for contact with the previously piled stack of sheets, progressively from the `median portion of the sheet toward its outer side edges, whereby the sheet is Caused to lie or arrange itself properly upon the stack without bending or buckling, and pockets of air, which have a tendency to prevent a proper laying of the sheet on the previously piled stack, are avoided.

The invention will be further readily understood from the following description and claims, and from the drawings, in

` which latter:

Figure l is a plan viewl ofso much of a printing press as is necessaryto illustrate my invention.

Fig. 2 is a side elevation of the same with part of the main frame broken away for better illustration of parts.

Fig. 3 is a longitudinal section of the same taken on the line 3 3 of Fig. 1.

Fig. 4 is an enlarged sectional detail of the same taken on the same section line and showing the grippers about to be tripped.

Fig. 5 is a cross-section taken on the line 5 5 of Fig. l, showing so much of a printing machine as is necessary to illustrate my improved device.

Fig. 6 is a longitudinal section taken in the plane of the line 6 6 of Fig. 7 illustrating the manner in which the sheet is bowed downwardly.

Fig. 7 is a cross-section of the same taken in the plane of the line 7 7 of Fig. 6.

Fig. 8 is a longitudinal section taken in the plane of the line 3 3 of Fig. l, illustrating a modification of the means for drawing the supporting tape taut.

Fig. 9 is a plan view of the same.

Fig. l0 is a detail in cross-section taken in the plane of the line 3 3 of Fig. l, showing a further modification for drawing the tape taut.

Fig. 1l is a cross-section of the same taken on the line ll l1 of Fig. l0; and,

Fig. 12 is a cross-sectional detail on the line l2 12 of Fig. l, showing the means for securing the sheet stops in place.

11 represents the main frame, in which a suitable impression-cylinder, exemplified at 12 as partly broken away, is arranged to loe suitably mounted and rotated for performing the printing of the sheet. After the sheet is printed it is arranged torbe delivered, exemplified as accomplished by means of a sprocket-chain delivery comprising sprocket-chains 13, one at each side of the machine, arranged to be received loop-wise about sprocket-wheels 14, 15, of which the sprocket-wheels are idler sprocket-wheels loosely rotating on a shaft 10. The sprocketchains carry suitable gripper-mechanisms which travel with the chains, exemplified as grippers 16 adjustable crosswise` of the machine on a rocker-bar17, and held in adjustedpositions by set-screws 17. The grippers coact with contact-parts 18, adjustable crosswise of the machine on a bar 19, and

I securedthereto'by a set-bolt 27.

The gripper's'lG are released by the gripper-cam 26 proximate to the end of travel of the printed sheet, the forward end of the printed sheet being received under endguides 31 andagainst end-stops 32 on slides 34 suitably adjustably secured crosswise of the machine on a cross-bar 33, by meansof set-screws 35. Y

The printed sheet is' caused to travel in 'l a delivery movement so as to position the same above a delivery'table 41 whereon the sheets are stacked, exemplified'by the stack of sheets 42, this delivery movement being j accomplished by the gripping of the forward end of the sheet by means of the grippersv 16, the sprocket-chains carrying the grippers and the sheet gripped thereby with them inv their movement. Proximate to the end of the delivery movement, the grippers are caused to 'release the sheet', the inertia of movement of the sheet carrying it to the end-stops 32. Y I

In the delivery of sheets heretofore it has been difficult, especially when printing ythin sheets, to control the proper dropping of the sheets, the inertiaof movement of the sheets causing the sheets to crowd against the endstops, resulting'in the cross-buckling of the sheet, inV improper dropping of the sheet,

damage to the forward or register-edges of the sheets,and excessive abrasions between the unprinted or lower portion of the sheet being dropped with the wet printed surfaces y ofthe previously dropped sheets.

In order to overcome these objections I provide lside supports 43 for the sheet, `exemplified `as'tapes, there being preferably one tape for each side of each sheet being dropped. I have exemplified the sheets as being dropped singly. Ifv the sheets are severed to form aV plurality of sheets being dropped Simultaneously side by side, the mechanisms may be duplicated accordingly. j

The tapes are laterally adjustable to accommodate for the width of the sheet being dropped. rllhe rear end of the tape is exemplified as clamped by means of a clamp 44 to a laterally adjustable block- 45 adjustable on a cross-bar 46, and held in adjustable position by means of a set-screw 47. The forwardA end ofthe tape is received about a roller 39 supported byl a block 48 arranged to be laterally adjustedr on the cross-bar 33 and to be held in adjusted positions by means of a set-screw 49; For renderingthe tape taut I have exemplified the same as looped about the roller and provided with an adjustable buckle 50;

If desired, the forwardv end of each of the tapes may be looped about the roller' andl sewed to the main stretch ofthe tape at 51, and the rear end of the tapes pass overY a block 145 and have a weight 52 secured thereto for keeping'tl'ie tape taut, as exemplifiedV in Figs. 8 and 9. The block is pro"- vided with lips 53 for guiding'the tape, and the block 145 is adjustable vlaterally ony the cross-bar 456 and arranged to be clamped in adjusted positions by a set-screw`147.

I have in Fig. 10 shown a furtherr modiiication in which the rear end ofthe tapev is received about a spring-actuatedY roller 55, having a winding action on the tape by means of'a spring 56, the roller beingjournaled vin the block 245, the block being adjustable laterally on the bar v46, and clampedv in adjusted position by a set-screw 247.A

In operation, the side supportsor tapes are so arrangedl as to converge toward the rear for supporting the side'edges of the sheet by means of'supp'orts which approach eachother toward `the rear of the sheet, sov

that the rear lateral' edges of the sheet may be held in substantially the plane of movement of the front edge of the sheet being de,-A

livered.,4

The front edge ofV they sheet is supported in stretched relation crosswise of themachine by means of the grippers, which pull the sheet over a cross-piece 57, and over and along the tapes or side-edge su ports, for supporting the side-edges of the siieet in rea-r of the grippers. The action vupon the sheet is to cause a sagging of the middle portion of the sheet lengthwise of its path of movement for stiffening the sheet length-wise of such path and preventing buckling or foldin'g of the sheet cross wise of the sheet upon impact of the front edge of the sheet with the stops in the delivery movement..v Upon lll@ release of the forward edge of the sheet by I the grippers, this forward edge will also portions of the sheet will arrange themselves progressively from the median portion toward the lateral edges upon the stack for preventing` cushions of air under the sheet, which would have a tendency to crease or buckle the sheet, and causing the sheet to arrange itself flat upon the previouslyV formed stack.

Suitable jogger mechanism may if desii-ed be provided. Such mechanism is exemplified as comprising jogger boards 61, 62, mounted on slides 68, 64E, sliding in guides G5, G6, the guides of the side joggerboards being mounted on side-bars 67 adjustable laterally on the transverse bars 33,

Y416, and secured in adjusted positions by means of set-screws 68, 69. The guides 65 are adjustable lengthwise of the side-bars and are held in adjusted positions by means of clamp-screws 70. The guides GG are adj ustable lengthwise of the transverse bars 33, 46, and are held. in adjusted positions by means of clamp-screws 71.

Suitable bell-crank levers Til, 75, are pivoted at 76, 77, to the guides 65, 66. They are articulated at 78, 79, respectively with the slides G3, 64, for transferring motion thereto, and are articulated at 80, 81, with blocks S2, 83, adjustably secured by setscrews 85, 86, lengthwise on operating bars 87, 88. 'Ihe bars S7 are articulated at 90 to arms 91 adjustably secured lengthwise on a rock-shaft 92, the rock-shaft being rocked by means of an arm 93 in suitable manner, as by a reciprocating rod 9a. A bell-crank lever 95 transfers motion from one of the operating bars 87 to the operating bar 88.

Suitable fingers 96 adjustable laterally on a rock-shaft 97 act as front stops for the sheets passing to the table 41. The fingers are held in normally depending positions by a spring 98.

I-Iaving thus fully described my invention, what I claim as new and desire to secure by Letters Patent is:

l. In sheet delivering mechanism for printing presses, the combination with delivering means acting on the forward edge of the sheet for delivering the sheet, of supports for the side portions of the sheet arranged convergingly toward the rear.

2. In sheet delivering mechanism for printing presses, the combination with delivering means acting on the forward edge of the sheet for delivering the sheet, of supports acting solely upon the side portions of the sheet being delivered, and means for adjusting said supports laterally for adjusting the angular relation between said supports, and arranged for dropping-the sheet between said supports and retarding the dropping of said side portions.

3. In sheet delivering printing presses, the combination with delivering means acting on the forward edge of the sheet for delivering the sheet, of supports for the side portions of thesheet arranged convergingly toward the rear, and means for adjustably positioning the rear portions of said supports toward and from each other.

a. In sheet delivering mechanism for printing presses, the combination with delivering means acting on the forward edge of the sheet for delivering the sheet, of supports acting solely upon the side portions of the sheet being delivered, and means for adjusting said supports laterally for adjusting the angular relation between said supports, constructed and arranged for dropping the sheet between said supports with thedropping of said side-portions retarded, and jogger mechanism acting on the sheet during dropping of the same.

5. In sheet delivering mechanism for printing presses, the combination with delivering means acting on the forward edge of the sheet for delivering the sheet, of flexible supports for the side portions of the sheet, means for adjustably positioning the rear portions of said supports toward and from each other, and means for applying tension to said iiexible supports.

6. In sheet delivering mechanism for printing presses, the combination, with delivering means acting on the forward edge of the sheet for delivering the sheet, of supports for the side portions of the sheet eX- tending in converging lines, converging toward the rear, and over which said side portions of the sheet travel in the delivering movement of the sheet for being supported by said supports, and past which said side portions of the sheet pass upon release of the sheet by said delivering means.

7. In sheet delivering mechanism for printing presses, the combination, with delivering means acting on the forward edge of the sheet for delivering the sheet with said forward edge in a substantially straight line, of supports for the side portions of the sheet, said supports relatively converging toward the rear, the side portions of the sheet arranged to travel upon said supports in the delivering movement of the sheet for being supported by said supports in said delivering movement, with the middle pormechanism for tion ofthe sheet in rear of its front edge formed with a downward bulge extending lengthwise of the path of movement of the sheet and having a curvature extending crosswise of said path, and said side portions of the sheet arranged to drop past said supports upon cessation of said delivering movement of the sheet.l

8'.- In sheet delivering mechanism for printing presses, the combination, withdelivering means acting on the forward edge of the sheet for delivering the sheet with sai-idy front edge in substantially avstraight line, of supports for the side` portions of the sheet, said side portions of the sheet arranged to travel upon said supports in the delivering movement of the sheet for being supported by said supportsv in said deliv- Copies otthisupatent may be btained for formed with a downward bulge extending lengthwise of the path of movement of the f sheet and having a curvature extending erosswise of said path, said side portions 'of the sheet arranged to drop past said supports upon cessation of said delivering movement of the' sheet and to follow said bulged portion into dropped position.

In testimony whereof, I have hereunto signed my name in the presence of two sul scribing witnesses.

FREDERICK H. BEROLD.

litnesses THERESA M. SILBER, DAWSON E. BRADLEY.

ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

